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    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        const properties = [
            "中华园,北京市,公寓",
            "华景苑,上海市,别墅",
            "新城市广场,深圳市,公寓",
            "雅居乐花园,广州市,别墅",
            "恒大城,广州市,公寓",
            "太阳花园,北京市,别墅"
        ];

        const arr1 = []
        const arr2 = []
        const arr = properties.map( item  => {
           return  item.split(',').forEach(function (item,index,array)  {
                if (item === '公寓') {
                   arr1.push(array[0])
                }else if(item === '别墅'){
                   arr2.push(array[0])
                }
        })
        })

        const obj = {
            '公寓': arr1,
            '别墅':arr2
        }
        console.log(obj);

    </script>
</body>

</html>